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SPECIFICATION P - Mason Industries

Author: July

Jul. 21, 2025

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SPECIFICATION P - Mason Industries

Rubber connectors are preferable for sound and vibration attenuation, but careful consideration must be given to pressure and temperature and locations other than machine rooms. Stainless is recommended in locations away from equipment rooms and temperatures over 250°F (120°C) in continuous service or pressures beyond published rubber pressure ratings.

If you are looking for more details, kindly visit Chixing.

The very short “Pump Connectors” accepted today are based on chipping away at the 36” FF minimum used 50 years ago. These “getting the order” cost and length reductions continued, with no engineering reason, until no one dared go shorter. While simple field studies showed they were useless, we had no data to back this up, so we decided to test transverse hose stiffness. To the best of our knowledge, this had never been done before.

Bulletin BH-29 reviews these tests. We determined the force required to displace various lengths of hose 1/8” at different pressures and compared it to the transverse stiffness of the connected piping. The hose stiffness should be lower than the piping, just as spring mounting stiffness must be lower than structural stiffness in isolation work. Unfortunately, even at 36” FF we can only approach it in some sizes. We have no data on 48” lengths and it reaches a point where lengths become impractical. We did no test work on copper lines, as they are similarly too light and flexible. As we learn more, we will keep you informed. Please refer to these tests as they are the basis of our recommended specifications.

The specification calls for a minimum number of corrugations per foot to reduce stiffness. Without this requirement and fewer corrugations, hoses are cheaper to manufacture, but poorer in performance. There may be hoses even more flexible, but ours are a good criteria.

We are suggesting a floating flange at one end rather than two fixed flanges. This makes installation easier and eliminates the possibility of twisting the hose body during installation. Flanges are raised face to improve sealing pressure.

We resist welding as replacement is very costly in down time and field difficulty.

FlexiFlow: Stainless Steel Braided Flexible Hose - The Metal Company

The Metal Company stock both PTFE and stainless steel convoluted flexible braided hoses.

And yes, we hold these in stock ready for dispatch over night. 

Because of their flexibility these hoses are great for reducing mechanical vibration, compensating for expansion and contraction or misalignment of pipework.

These hoses have a 316 stainless convoluted inner tube and an external 304 stainless braid. Important to note that these do not have a rubber liner, they are 100% stainless. 

These hoses are designed and manufactured to handle high temperatures, pressures and vibrations so they have a long life span. 

Each hose has a tag on the side, this displays some very important information and states that each hose have been individually tested twice, both a hydro and pneumatic test.   

We stock these hoses with end connections such as Tri Clovers, RJT’s, BSP, Flanges, RapidPress and Buttweld ends and we can even custom fabricate any end connections you require.

The company is the world’s best Flanged Flexible Metal Hoses supplier. We are your one-stop shop for all needs. Our staff are highly-specialized and will help you find the product you need.

We stock FlexiFlow hoses in diameters from 15NB right up to 100NB and in lengths from 300mm-mm.

The Metal Company also stock flexiflow hoses that have a convoluted PTFE liner making them more suitable for food and beverage applications, and harsh chemicals. 

If you have any questions on our FlexiFlow range, then please get in touch with the crew at The Metal Company. Because we make buying stainless steel easy!

The Metal Company stock both PTFE and stainless steel convoluted flexible braided hoses.

And yes, we hold these in stock ready for dispatch over night. 

Because of their flexibility these hoses are great for reducing mechanical vibration, compensating for expansion and contraction or misalignment of pipework.

These hoses have a 316 stainless convoluted inner tube and an external 304 stainless braid. Important to note that these do not have a rubber liner, they are 100% stainless. 

These hoses are designed and manufactured to handle high temperatures, pressures and vibrations so they have a long life span. 

Each hose has a tag on the side, this displays some very important information and states that each hose have been individually tested twice, both a hydro and pneumatic test.   

We stock these hoses with end connections such as Tri Clovers, RJT’s, BSP, Flanges, RapidPress and Buttweld ends and we can even custom fabricate any end connections you require.

We stock FlexiFlow hoses in diameters from 15NB right up to 100NB and in lengths from 300mm-mm.

The Metal Company also stock flexiflow hoses that have a convoluted PTFE liner making them more suitable for food and beverage applications, and harsh chemicals. 

If you have any questions on our FlexiFlow range, then please get in touch with the crew at The Metal Company. Because we make buying stainless steel easy!

Are you interested in learning more about Expansion Joints Supplier? Contact us today to secure an expert consultation!

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